Internal-combustion engine.



I T. REUTBR. INTERNAL COMBUSTION ENGINE.

APPLIOATIOH FILED AUG. 18, 1909.

Patented Oct. 4. 1910.

Elm

siding at 24; Obere Y'Vielandstrasse, Winten When the reversing mechanism is turned il l ill it. l-Q

THEUIDOB Itl lUTETE-t, TUIII'JTERTHTJB, STUITZERLAND.

IlilllllitlU-ALCGMBUSTIQN ENGINE.

specification of liea'tion illitfii' August To all whom it may concern:

Be it known that l, Tnnonon Racine, engmeer, a citizen of the Swiss .RGEHllJllCfEQ- thur, Switzerland, have. invented certain new and useful Improvements in. Internal-Conn bustion Engines; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object ofthe present invention is to prevent accidental admission through the starting valve of an internal combustion en-'-' gine of the air or gasflunder pressure which is to be used for starting the engine,

Hitherto the starting valve has usually opened inward into the combustion chainher or the cylinder, so that the valve has been held closed by the pressure in. the cylinder. In this case, if the pressure or" the air for starting is very great, the valve may be opened by this pressure and the air be admitted to the cylinder; this ght happen if the valve sp n Hliould sucn an accidents. after the exhaust valve osed, that or during compres-zsio working eylind. jure the engine or even ..ve dangerous.

In reversible combustion engines, the starting valve in not admit any air under pressure to the working cylinder when the reversing mechanism is being turned back through the starting position, as when it is being turned from the position. which it has when the engine is running to that which it has when the engine is at rest. This is of especial importance because it may happen that during this movement of the reversing mechanism the starting valve is opened, which would hinder the engine from coming to rest, For the purpose of removing this diflicul-ty and danger the present invention provides a cut-0d device such as a check valve in the pipe conducting the compressedair to the starting valve, which device opened to allow passage of the air, by the act of reversing the engine, but otherwise cuts oil the air from the starting valve.

The invention attains two ends :.--During running, when the starting valve is not to be operated,'the supply of air to this valve is automatically cut oil by the check valve.

before re in the m, to in- Le t ters from therunning position to the stationary Fatented @ct. 4i, 31.910

position, the check valve prevents comv pressed air from entering the cylinder, particularly at the period when the reversing mechanism passes through the starting position.

In the accompanying drawing, Figure 'l is a sectional view of mechanism embodying the invention, and Fig. 2 iso detail of the The starting valve (L is controlled from the shaft b-by the oscillating cam 0 adapted to be adjusted on theshaft by the reversing shaft (Z through the lever m and connecting rod on. In the median or intermediate position the cam had no action on the starting valve, while in its extreme positions it opens the v 'lve for starting the forward and. backwar running respectively. The reversing shaft (5 is set to the various positions for stationary starting and running by means of the hand lever n, The compressed air for starting flows to the starting valve through the casing c of the check valve 1, which remains closed by the pressure oi. the air behihd. it. This check valve is opened by the action of the cam is secured on the reversing shaft d, the cam operates on a releasing mechanism 9 and h, through roller 2'.

T he releasing mechanism comprises a guide rod 72, which edects the release and has a groove alon one side, and a two armed lever g, which y the action of plate springs Z on the pawl Z journaled on the lever g, is held in a position in which the check valve 7 is closed. The pawl Z is enabled to hold the lever in this position since it is held against a support on the stationary valve casing by 'means of the above mentioned springs Z, so that on any movement of the lever g out of the position shown, a turning movement is exerted on the lever g which tends to return it to its normal. position. It, for reversing or starting, the cam disk is rotate :l, valve f is lifted by the spring pawl lever 9", and air under pressure is free to pass to ti o starting valve a, which is controlled according to the direction of running of the starting to the running position, the simultaneous continudd rotation of the cam disk 70 depresses the rod it so far that the left hand. pawl of the lever g slips into the notch in the rod 72 whereupon the lever g springs back to its original position through Thus the valve f remains.closed so that no "compressed air can pass to the starting valve.

The when compressed air is to enter the cylinder through the starting valve.

WVithout limiting myself to the construction shown,-I claim z- '1. The combination with a' starting valve of an internal combustion engine, and compressed air piping leading to the same, of a cut-off valve in said piping, reversing mechanism for the engine, and an operating connection between said mechanism and-said valve which permits the valve to stay closed during the operation of the engine and during the. movement of the reversing mechanism'from running position to stationary pocheck valve is therefore only opened sition.

nism and said cut-01f valve which keeps the latter closed during the movement of the controlling mechanism from the working to the stationary position.

3. The combination with a starting valve of an internal combustion engine, and compressed air piping leading thereto, of a cut-oil valve in said piping, a reversing shaft having a cam, and means to transmit the movements of said cam to said cut-ofi' valve.

4. The combination with a starting valve of an internal combustion engine, of a out off valve in connection therewith, a reversing shaft, a cam on the reversing shaft and means to transmit the movements of said cam to the cut-01f valve, including a slidingspring-pressed member resting against the cam, and releasing mechanism in connection" with said member and in operative relation with the spindle of said cut-off valve.

5. The combination with a starting valve of an internal combustion engine, of a cut-off having a cam toactua'te the starting valve, areversing shaft having a camconnected with the cut-off valve, and an, operative connection between the countershaft cam and the reversing shaft.

In testimony, whereof I have aiiixed my signature, in presence of two witnesses.

THEODOR REUTER.

. Witnesses WILHELM BACHMANN, WALTHER REINHART.

' valve in connection therewith, a 'countershaft operatively 

